$(document).ready(function(){
	//导航选中更换背景图片
	var nowLi = $(".liA:eq(0)");
	$(".ZiXunLi").click(function(){
		var index = $(".ZiXunLi").index(this);
		$(nowLi).css("background","none");
		var obj = ".liA:eq(" + index + ")";
		nowLi = $(obj);
		$(obj).css("background","url('..//images/clickNav.png') no-repeat 0 0 scroll");
	});
})